Stand off and rain artillery and bombs on the goat humpers.
One thing is certain -- there will be no tunnel network when the IDF leaves. There may not be much infrastructure either.
Which is exactly what should happen.
Israel's approach is smart, kill Hamas where they lay, but in the long term, force a permanent exodus from Gaza -- make the Palis the problem of Egypt, and Jordan, and Saudi Arabia, and Dubai, where the Pali diaspora is already creating problems; and let the Mooselime crescent absorb their plague-carrying rats.
This is the best long-term way to punish Iran -- who always, always overplay their weak hand -- by sending the Palis to Iran's Mudshite enemies!